manji vs tetraskelion

manji

noun
  • A left-facing Japanese swastika, primarily used in Buddhism. 

  • A captain or skipper of a boat. 

  • A type of raised bed similar to a cot from South Asia. 

  • A Sikh religious administrative unit. 

tetraskelion

noun
  • A type of swastika, especially a stylized one used in Mayan art. 

How often have the words manji and tetraskelion occurred in a corpus of books? (source: Google Ngram Viewer )